Quote from: lano1106 on June 24, 2013, 05:11:46 AM

Quote from: dinominant on June 19, 2013, 03:59:12 PM

I haven't tuned the software on these rigs for minimum overhead and I haven't overclocked the video cards yet either. Currently the farm is running at ~6GH/s or ~500MH/s for each 7970. I built it as fast as I could to get the mining started so they are currently running Ubuntu desktop. Ultimately I plan to create a Gentoo USB install that automatically tunes and mines each rig.

Just curious, you're driving 3 7970 with a 850W PSU???

Considering that each GPU is taking 250-300W, this is pushing the limit a little bit, isn't it?

Are you tweaking the GPUs voltage to make this setup be stable?

I haven't tuned anything. When I chose the hardware, I estimated 250W per 7970, then went for an 850W. The PSU has a single 12V rail so all 4 rigs appear to be running stable -- even through some very bad thunder storms. I have not overclocked/underclocked anything and the voltages are currently all stock. I just haven't had time to build a decent Live USB miner that has the software on it to do that.